The guys at MIT makes things that the guys at Harvard make money off of. If you compare the two universities by who is running the executive functions and owns the capital of the tech companies where MIT folks do the grunt work, I think you'd see Harvard comes out way ahead. This is not to say that MIT grads don't also go into these roles (there area lot of MIT-funded companies, like BBN, etc), but rather that Harvard grads are more likely to do so.